More than 100 emergency sirens blanket the City of San Francisco, ready to warn locals in the event of a flood, a fire, an earthquake, or terrorism. And while true emergencies are few and far between, ...

A patched vulnerability in San Francisco’s public safety warning siren system suggests other radio-based platforms could also be hacked. Public emergency alert sirens, designed to both warn the masses ...

Emergency alert systems manufactured by Acoustic Technology Inc. can be hijacked and made to play any audio thanks to a vulnerability dubbed SirenJack. Thanks to a flaw in popular emergency alert ...

Hackers can spoof and hijack communications targeting sirens part of emergency alert systems to trigger false alerts and cause panic among a local population. Attackers can achieve this by exploiting ...

A hacker’s warning about the security vulnerabilities of public loudspeakers used for emergency warnings in San Francisco has raised concerns about other such sirens installed by the same company in ...

Two additional sets of vendors for the city's replacement warning siren service will hold citywide tests over the next ten days. ATI will test sirens at various locations around the city on Thursday, ...